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Cheap flights from Boston to Saint John from C$ 364

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/9. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — YSJ
2 May — 9 May1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Boston to St John

Enter your travel dates to find the best prices.

Cheapest flights from Boston to St John
Explore the most affordable flight options available from Boston to St John. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 2 April 2026.

Sun 21/610:05 a.m.
BOS
-
YSJ
1 stop22h 55m
Multiple Airlines
Wed 24/610:45 a.m.
YSJ
-
BOS
1 stop9h 56m
Multiple Airlines
Deal found 28/3C$ 753
Wed 13/59:04 p.m.
BOS
-
YSJ
2 stops35h 56m
Multiple Airlines
Wed 20/510:45 a.m.
YSJ
-
BOS
1 stop7h 50m
Multiple Airlines
Deal found 29/3C$ 790
Mon 4/510:35 a.m.
BOS
-
YSJ
1 stop4h 05m
Air Canada
Wed 6/54:30 p.m.
YSJ
-
BOS
1 stop5h 57m
Air Canada
Deal found 30/3C$ 836
Wed 3/610:35 a.m.
BOS
-
YSJ
1 stop4h 15m
Air Canada
Sat 6/64:30 p.m.
YSJ
-
BOS
1 stop5h 57m
Air Canada
Deal found 29/3C$ 843
Fri 15/55:10 a.m.
BOS
-
YSJ
1 stop5h 47m
Air Canada
Fri 22/54:30 p.m.
YSJ
-
BOS
1 stop5h 57m
Air Canada
Deal found 1/4C$ 849
Wed 22/45:30 a.m.
BOS
-
YSJ
1 stop4h 45m
Air Canada
Sat 25/45:35 a.m.
YSJ
-
BOS
1 stop5h 24m
Air Canada
Deal found 28/3C$ 850
Fri 5/65:10 a.m.
BOS
-
YSJ
2 stops9h 40m
Air Canada
Mon 8/64:30 p.m.
YSJ
-
BOS
1 stop5h 57m
Air Canada
Deal found 1/4C$ 856
Thu 18/65:10 a.m.
BOS
-
YSJ
2 stops9h 40m
Air Canada
Sun 21/65:40 a.m.
YSJ
-
BOS
1 stop5h 13m
Air Canada
Deal found 30/3C$ 868

Find flight deals from Boston to St John

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to St John (YSJ). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 2 April 2026.

Round-trip from

C$ 753

One-way from

C$ 364
21/6-24/6
  • 21/6-24/6
  • 2 total stops
  • 32h 51m total
  • Boston to Saint John
Search Deals
Air Canada
  • Air Canada
  • 5/9
  • 1 total stop
  • 4h 10m total
  • Boston to Saint John
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boston to St John that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 2 April 2026.
Use the filters below to find and compare flights from Boston to Saint John that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BostonSaint John

BOS - YSJ

BOSYSJ

Boston Logan Intl

Sun 21/6

10:05 a.m.-10:00 a.m.

1 stop22h 55m

Saint John

Wed 24/6

10:45 a.m.-7:41 p.m.

1 stop9h 56m

C$ 753

BostonSaint John

BOS - YSJ

BOSYSJ

Boston Logan Intl

Wed 13/5

9:04 p.m.-10:00 a.m.

2 stops35h 56m

Saint John

Wed 20/5

10:45 a.m.-5:35 p.m.

1 stop7h 50m

C$ 790

BostonSaint John

BOS - YSJ

BOSYSJ

Boston Logan Intl

Fri 5/6

10:35 a.m.-3:50 p.m.

1 stop4h 15m

Saint John

Mon 8/6

4:30 p.m.-9:27 p.m.

1 stop5h 57m

C$ 836
Quickest round-trip

BostonSaint John

BOS - YSJ

BOSYSJ

Boston Logan Intl

Mon 4/5

10:35 a.m.-3:40 p.m.

1 stop4h 05m

Saint John

Wed 6/5

4:30 p.m.-9:27 p.m.

1 stop5h 57m

C$ 836

BostonSaint John

BOS - YSJ

BOSYSJ

Boston Logan Intl

Wed 3/6

10:35 a.m.-3:50 p.m.

1 stop4h 15m

Saint John

Sat 6/6

4:30 p.m.-9:27 p.m.

1 stop5h 57m

C$ 843

BostonSaint John

BOS - YSJ

BOSYSJ

Boston Logan Intl

Thu 18/6

10:40 a.m.-3:50 p.m.

1 stop4h 10m

Saint John

Sun 21/6

5:40 a.m.-11:52 a.m.

1 stop7h 12m

C$ 849

BostonSaint John

BOS - YSJ

BOSYSJ

Boston Logan Intl

Wed 22/4

5:30 a.m.-11:15 a.m.

1 stop4h 45m

Saint John

Sat 25/4

5:35 a.m.-9:59 a.m.

1 stop5h 24m

C$ 850

BostonSaint John

BOS - YSJ

BOSYSJ

Boston Logan Intl

Fri 15/5

5:00 p.m.-11:52 p.m.

1 stop5h 52m

Saint John

Fri 22/5

4:30 p.m.-9:27 p.m.

1 stop5h 57m

C$ 850
Cheapest one-way
Quickest one-way

BostonSaint John

BOS - YSJ

BOSYSJ

Boston Logan Intl

Mon 21/9

10:40 a.m.-3:49 p.m.

1 stop4h 09m

C$ 364

BostonSaint John

BOS - YSJ

BOSYSJ

Boston Logan Intl

Tue 18/8

10:40 a.m.-3:50 p.m.

1 stop4h 10m

C$ 383

Flights are sorted by cheapest round-trip flights first.

Deals found on 31/3

Showing 1-10 of 13 resultsSorted by cheapest first
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Best time to book a flight from Boston to St John

Have a flexible travel schedule? Discover the best time to fly to St John from Boston with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Related info for your journey

Find useful and relevant information for your journey from Boston to St John. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Boston to Saint John?

    Air Canada can get you from Boston to Saint John in just under 4h 15m. Your travel time can differ by up to . The distance between Boston and Saint John is about 526 km.

  • Can I find deals for flights from Boston to St John that include hotel bookings?

    Yes. In addition to deals on Boston to St John flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Boston to St John?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boston to St John.

  • Can I find deals for business class flights from Boston to St John?

    Yes. Cheapflights offers flight deals from Boston to St John by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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Alternative routes for Boston to St John

See prices for flight routes from nearby airports that may be better suited for you.
Boston to Moncton flights

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Cheapflights makes it easy to find Boston to St John flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Boston to St John?

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Can Cheapflights find flights from Boston to St John with no change fees?

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Can Cheapflights notify me if prices for flights from Boston to St John become cheaper?

Yes! Start tracking prices for Boston to St John flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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